Queen Elizabeth II and her son, Prince Andrew, were present as Emirati president Sheikh Khalifa bin Zayed al-Nahayan was given a ceremonial welcome to the United Kingdom in the grounds of Windsor Castle.

The sheikh is beginning a state visit to the UK, the first for a president of the United Arab Emirates in 24 years.

He is set to meet British prime minister David Cameron at Downing Street tomorrow.

The State Visit Of The President Of The UAE

WINDSOR, ENGLAND - APRIL 30: Queen Elizabeth II, Prince Philip, the Duke of Edinburgh and President of the United Arab Emirates, His Highness Sheikh Khalifa bin Zayed Al Nahyan as they leave following the inspection of an honour guard during a ceremonial welcome on April 30, 2013 in Windsor, England. President Sheikh Khalifa begins a State visit to the UK today, the first for a UEA President in 24 years. Sheikh Khalifa will meet the British Prime Minister David Cameron tomorrow at his Downing Street residence. (Picture: by Toby Melville - WPA Pool/Getty Images

WINDSOR, ENGLAND - APRIL 30: Queen Elizabeth II, Prince Philip, the Duke of Edinburgh and President of the United Arab Emirates, His Highness Sheikh Khalifa bin Zayed Al Nahyan as they leave following the inspection of an honour guard during a ceremonial welcome on April 30, 2013 in Windsor, England. President Sheikh Khalifa begins a State visit to the UK today, the first for a UEA President in 24 years. Sheikh Khalifa will meet the British Prime Minister David Cameron tomorrow at his Downing Street residence. Picture: by Toby Melville - WPA Pool/Getty Images

Britain’s Queen Elizabeth and her son Prince Andrew

Britain's Queen Elizabeth (R) and her son Prince Andrew watch as the United Arab Emirates president reviews an honour guard during a ceremonial welcome at Windsor Castle, in Windsor, southern England April 30, 2013. The President is paying a state visit to Britain from April 30 to May 1. Picture REUTERS/Toby Melville

Britain's Queen Elizabeth (R) and her son Prince Andrew watch as the United Arab Emirates president reviews an honour guard during a ceremonial welcome at Windsor Castle, in Windsor, southern England April 30, 2013. The President is paying a state visit to Britain from April 30 to May 1. Picture: REUTERS/Toby Melville

Britain’s Queen Elizabeth II and the President of the United Arab Emirates Sheikh Khalifa bin Zayed al-Nahayan travel by State Carriage towards Windsor Castle

Britain's Queen Elizabeth II and the President of the United Arab Emirates Sheikh Khalifa bin Zayed al-Nahayan travel by State Carriage towards Windsor Castle (Background) for a Ceremonial Welcome in the town of Windsor, west of London, on April 30, 2013. The President began a two day State Visit to Britain Tuesday where he is also expected to meet with British Prime Minister David Cameron. Picture: JUSTIN TALLISJUSTIN TALLIS/AFP/Getty Images

Britain's Queen Elizabeth II and the President of the United Arab Emirates Sheikh Khalifa bin Zayed al-Nahayan travel by State Carriage towards Windsor Castle (Background) for a Ceremonial Welcome in the town of Windsor, west of London, on April 30, 2013. The President began a two day State Visit to Britain Tuesday where he is also expected to meet with British Prime Minister David Cameron. AFP Picture/: JUSTIN TALLISJUSTIN TALLIS/AFP/Getty Images

Britain's Queen Elizabeth II (L) walks and talks with Emirati President Sheikh Khalifa bin Zayed al-Nahayan (C) after a ceremonial welcome for his State visit in the grounds of Windsor Castle, in Berkshire, west of London on April 30, 2013. Sheikh Khalifa officially began a State visit to Britain with a cermonial welcome in Windsor hosted by the Queen and the Duke of Edinburgh. AFP Picture/: POOL / TOBY MELVILLETOBY MELVILLE/AFP/Getty Images

Britain's Queen Elizabeth II (L) walks and talks with Emirati President Sheikh Khalifa bin Zayed al-Nahayan (C) after a ceremonial welcome for his State visit in the grounds of Windsor Castle, in Berkshire, west of London on April 30, 2013. Sheikh Khalifa officially began a State visit to Britain with a cermonial welcome in Windsor hosted by the Queen and the Duke of Edinburgh. AFP Picture : POOL / TOBY MELVILLETOBY MELVILLE/AFP/Getty Images

Members of the military take part in a march past for the President of the United Arab Emirates Sheik Khalifa bin Zayed Al Nahyan

Members of the military take part in a march past for the President of the United Arab Emirates Sheik Khalifa bin Zayed Al Nahyan, as he stands with Britain's Queen Elizabeth II, and her husband the Duke of Edinburgh on a dias at the top of the quadrangle of Windsor Castle in Windsor, England, Tuesday, April 30, 2013. Sheik Khalifa bin Zayed Al Nahyan is on a two-day State Visit to the UK. (AP Picture: Matt Dunham-Pool)

Members of the military take part in a march past for the President of the United Arab Emirates Sheik Khalifa bin Zayed Al Nahyan, as he stands with Britain's Queen Elizabeth II, and her husband the Duke of Edinburgh on a dias at the top of the quadrangle of Windsor Castle in Windsor, England, Tuesday, April 30, 2013. Sheik Khalifa bin Zayed Al Nahyan is on a two-day State Visit to the UK. (AP Picture: Matt Dunham-Pool)

Queen Elizabeth II Hosts A Lunch For The State Visit Of The President Of The United Arab Emirates

WINDSOR, ENGLAND - APRIL 30: Queen Elizabeth II (L) and Prince Philip, Duke of Edinburgh (R), greet The President of the United Arab Emirates, His Highness Sheikh Khalifa bin Zayed Al Nahyan (C), in Windsor Castle on April 30, 2013 in Windsor, England. The President of the United Arab Emirates is paying a two-day State Visit to the United Kingdom, staying in Windsor Castle as the guest of Her Majesty The Queen from April 30, 2013 to May 1, 2013. Sheikh Khalifa will meet the British Prime Minister David Cameron tomorrow at his Downing Street residence. Picture: by Oli Scarff/Getty Images

WINDSOR, ENGLAND - APRIL 30: Queen Elizabeth II (L) and Prince Philip, Duke of Edinburgh (R), greet The President of the United Arab Emirates, His Highness Sheikh Khalifa bin Zayed Al Nahyan (C), in Windsor Castle on April 30, 2013 in Windsor, England. The President of the United Arab Emirates is paying a two-day State Visit to the United Kingdom, staying in Windsor Castle as the guest of Her Majesty The Queen from April 30, 2013 to May 1, 2013. Sheikh Khalifa will meet the British Prime Minister David Cameron tomorrow at his Downing Street residence. Picture: by Oli Scarff/Getty Images

Cavalrymen ride ahead of Britain’s Queen

Cavalrymen ride ahead of Britain's Queen Elizabeth II and Emirati President Sheikh Khalifa bin Zayed al-Nahayan in a state carriage as they process along the Long Walk toward Windsor Castle during an official welcome for the Emirati president's state visit in Windsor, Berkshire, west of London on April 30, 2013. Sheikh Khalifa officially began a State visit to Britain with a cermonial welcome in Windsor hosted by the Queen and the Duke of Edinburgh. AFP Picture: POOL / DAN KITWOODDan Kitwood/AFP/Getty Images

Cavalrymen ride ahead of Britain's Queen Elizabeth II and Emirati President Sheikh Khalifa bin Zayed al-Nahayan in a state carriage as they process along the Long Walk toward Windsor Castle during an official welcome for the Emirati president's state visit in Windsor, Berkshire, west of London on April 30, 2013. Sheikh Khalifa officially began a State visit to Britain with a cermonial welcome in Windsor hosted by the Queen and the Duke of Edinburgh. AFP Picture: POOL / DAN KITWOODDan Kitwood/AFP/Getty Images

The State Visit Of The President Of The UAE

WINDSOR, ENGLAND - APRIL 30: Members of the Household Cavalry join Queen Elizabeth II, Prince Philip, the Duke of Edinburgh and President of the United Arab Emirates, His Highness Sheikh Khalifa bin Zayed Al Nahyan as they process up the Long Walk at Windsor Castle during a ceremonial welcome on April 30, 2013 in Windsor, England. President Sheikh Khalifa begins a State visit to the UK today, the first for a UEA President in 24 years. Sheikh Khalifa will meet the British Prime Minister David Cameron tomorrow at his Downing Street residence. (Picture: by Steve Parsons - WPA Pool/Getty Images

WINDSOR, ENGLAND - APRIL 30: Members of the Household Cavalry join Queen Elizabeth II, Prince Philip, the Duke of Edinburgh and President of the United Arab Emirates, His Highness Sheikh Khalifa bin Zayed Al Nahyan as they process up the Long Walk at Windsor Castle during a ceremonial welcome on April 30, 2013 in Windsor, England. President Sheikh Khalifa begins a State visit to the UK today, the first for a UEA President in 24 years. Sheikh Khalifa will meet the British Prime Minister David Cameron tomorrow at his Downing Street residence. Picture: by Steve Parsons - WPA Pool/Getty Images

The State Visit Of The President Of The UAE

WINDSOR, ENGLAND - APRIL 30: Queen Elizabeth II speaks with President of the United Arab Emirates, His Highness Sheikh Khalifa bin Zayed Al Nahyan during a ceremonial welcome in the quadrangle of Windsor Castle on April 30, 2013 in Windsor, England. President Sheikh Khalifa begins a State visit to the UK today, the first for a UEA President in 24 years. Sheikh Khalifa will meet the British Prime Minister David Cameron tomorrow at his Downing Street residence. Picture: by Toby Melville - WPA Pool/Getty Images

WINDSOR, ENGLAND - APRIL 30: Queen Elizabeth II speaks with President of the United Arab Emirates, His Highness Sheikh Khalifa bin Zayed Al Nahyan during a ceremonial welcome in the quadrangle of Windsor Castle on April 30, 2013 in Windsor, England. President Sheikh Khalifa begins a State visit to the UK today, the first for a UEA President in 24 years. Sheikh Khalifa will meet the British Prime Minister David Cameron tomorrow at his Downing Street residence. Picture by Toby Melville - WPA Pool/Getty Images